The reaction takes place in a tubular reactor which contains the silver catalyst. This compound is produced from the hydration of eo which may produce in addition to ethylene glycol diethylene glycols and triethylene glycols. It is also used in antifreeze applications and in pharmaceuticals and cosmetics. After placing a sample of the glycol in the beaker, check the reading on the hydrometer and match it to the appropriate chart to accurately determine the glycol. Hacettepe university chemical engineering department ethylene glycol design aylin kangalli ayse dilara aydin seher balkanli tugba tuncel ethylene glycol was first prepared in 1859 by the french chemist charlesadolphe wurtz. In the omega process, the ethylene oxide is first converted with carbon dioxide co 2 to ethylene carbonate.
End uses for meg range from clothing and other textiles, through packaging to kitchenware, engine coolants and antifreeze. Synthetic polyester fiber made from highpurity meg. This process has been selected in the following design thesis and will hence be dealt in detail. Meg is the most common industrial diol which is used in. Ethylene glycol manufacture technology from ethylene. Ethylene glycol used to be manufactured by the hydrolysis of ethylene oxide eo which was produced via ethylene chlorohydrin but this method has been superseded by a direct oxidation route. Ethylene glycol industrial ethylene glycol meglobal glycol solv ethylene glycol, section 4. Chemical compatibility table geotech environmental. This report provides a qualitative assessment for ethylene glycol eg, diethylene glycol dg, diethylene glycol monomethyl ether dgme, diethylene glycol monoethyl ether dgme, and diethylene glycol.
Safety data sheet mono ethylene glycol 1 identification of the substancepreparation and companyundertaking application automotive. Mono ethylene glycol meg is an essential component used as raw material in diverse industrial processes such as the manufacture resins, polyester, fibers and various types of films. Triethyleneglycol teg, and monoethyleneglycol meg, units are used for gas dehydration by two types. Properties of ethylene glycol ethylene glycol is specifically colorless, syrupy hygroscopic liquid with a sweet. Monoethylene glycol project at paradip environment clearance. Mono ethylene glycol is produced from ethylene, via the intermediate ethylene oxide. This process typically yields about 9092% monoethylene glycol meg and 810% heavier glycol products, mainly diethylene glycol deg and triethylene glycol. Icis is implementing a process of rolling consultation on all of its pricing methodologies.
As a prevalent industrial product, this c2 diol finds widespread applications in different fields, for example, as a solvent, antifreeze agent and precursor for the manufacture of polyester fibres. Specific gravity charts plastic process equipment homepage. World scale ethylene glycol plant complete plants, process. Ethylene glycol can be recovered from the natural gas and reused as an inhibitor after purification treatment that removes water and inorganic salts. Meg production by coalbased syngas sinopec process block flow. In the process of making ethylene oxide and ethylene glycol, ethylene and oxygen react in the presence of a silver catalyst to form ethylene oxide and co 2. Ethylene glycol is also commonly used in heating applications that temporarily may not be operated cold in surroundings with freezing conditions such as cars and machines with water cooled engines. An ethylene glycol production follows the reaction between ethylene oxide and water at temperature of 200 c and pressure of 20 bars to produce monoethylene glycol and other higher glycols derivatives.
A guide to glycols 10 glycol based solutions can give excellent burst protection across a wide range of cold temperatures as indicated in figure 1. Water from the process of hydrolysis is evaporated from the mixture and reused. Monoethylene glycol meg is an important raw material for industrial applications. Process economics program report 2i ethylene glycol. This project report deals with the design calculations of mono ethylene glycol production from ethylene oxide as a feed stock along with their relevant aspects such as instrumentation and process.
Us33205673 197302 197302 process for preparing monoethylene glycol and ethylene oxide expired lifetime us3904656a en. The eo is first produced by the oxidation of ethylene in the presence of oxygen or air and a silver oxide catalyst. The dehydration by liquid media is more famous and economic than solid media. Selective catalytic twostep process for ethylene glycol. Safety data sheet mono ethylene glycol 1 identification of the substancepreparation and companyundertaking application automotive industry. The product recovery and purification consume water for the heating and cooling of the separation processes. Selective catalytic twostep process for ethylene glycol from. In order to promote public education and public safety, equal justice for all, a better informed citizenry, the rule of law, world trade and world peace, this legal document is hereby made available on a noncommercial basis, as it is the right of all humans to know and speak the laws that govern them.
Ethylene glycol manufacture technology free library. Page 2 of 5 msds t mono ethylene glycol irritation. Simulations of the reactor to step changes in the inlet flowrates showed a great effect on monoethylene glycol production. Meg mono ethylene glycol application meg is a vital ingredient for polyester fibers, film and pet packaging all of which are seeing burgeoning demand. Monoethylene glycol meg, also known as ethylene glycol eg or simply glycol, is a diol mostly used for the production of polyester fibers and polyethylene terephthalate pet resins. The process of natural gas dehydration is very important in. Conventional thermal processes coproduce about 10% diethylene and heavier glycols. Immediately flush eyes with plenty of water for at least 10 minutes. Monoethylene glycol, diethylene and triethylene glycol are separated using their different boiling points under vacuum. Mono ethylene glycol in its pure form, it is an odorless, colorless, syrupy liquid with a sweet taste. Ethylene glycol production chemical engineering page 1. Ethylene glycol mono methyl ether, diethylene glycol, and methyl ethyl ketone were used as nonsolvent additives and nmp was used as a solvent in membrane preparation 88,89. Syngasbased mono ethylene glycol synthesis in pujing.
Yes, the treatment process at the texas facility impacts the erm status of sterigenics waste ethylene glycol solution. In order to promote public education and public safety, equal justice for all, a better informed citizenry, the rule of law, world trade and world peace, this legal document is hereby. Mcc has developed a cuttingedge catalytic meg process that achieves a conversion. Us3904656a process for preparing monoethylene glycol and. Monoethylene glycol meg monoethylene glycol meg in its pure form, it is an odorless, colorless, syrupy liquid with a sweet taste. Pdf process simulation of glycol regeneration sohail. Ethylene glycol is the adduct of ethylene oxide eo and water and is the simplest glycol, the first of a homologous series of three dihydroxy alcohols, namely, mono, di and triethylene glycols meg, deg and teg. Introduction feature and history mcc has developed a cuttingedge catalytic meg process. It was produced on a small scale during world war i. Petro rabigh produces 600 kta of mono ethylene glycol meg through the most uptodate process and sells only in bulk quantities via petro rabigh terminal. With the increase in the concentration of ppesk in the casting solution, the viscosity strongly increases and becomes shearrate dependent. Ethylene glycol abarrraarra aaaarabr a gggeegg ethylene oxide uuxrrruauua xcuuuuu r gggeeu formaldehyde 100% baaucaaa aaccbbu caaaa.
Process analytics in ethylene oxide and ethylene glycol plants. An improved process for preparing fiber grade monoethylene glycol is provided which obviates the need for sewering large amounts of water. Material safety data sheet msds mono ethylene glycol. Diethylene glycol deg and triethylene glycol teg are obtained as coproducts in the manufacture of meg from ethylene oxide in some processes. Flush the contaminated skin with water for at least 10 minutes. Raw ethylene glycol is formed when ethylene oxide is hydrolyzed under pressure at ratio of 10. Pdf production of mono ethylene glycol by hydrolysis of. Monoethylene glycol meg or ethylene glycol is the most important of the commercially available glycols. Among these products, ethylene glycol eg is an important bulk chemical with an annual production and consumption of more than 20 million tons 6. In the described process, meg is produced via eo, which is manufactured in an integrated plant utilizing shell eo technology.
Mono ethylene glycol meg market size, share, price, trends. Ethylene glycol is widely used to inhibit the formation of natural gas clathrates hydrates in long multiphase pipelines that convey natural gas from remote gas fields to a gas processing facility. Ethylene glycol price report compliance and methodology. Some of the noted trends in the global mono ethylene glycol meg market includes product launch and process developments, for instance, shell global developed a new catalytic process called omega only meg advantage for producing meg from ethylene oxide which produces virtually no byproducts and achieves an efficiency of 99% conversion. Introduction feature and history mcc has developed a cuttingedge catalytic meg process that achieves.
This project report deals with the design calculations of mono ethylene glycol production from ethylene oxide as a feed stock along with their relevant aspects such as instrumentation and process control, hazop study and cost estimation. Monoethylene glycol, diethylene and triethylene glycol. It is a colorless liquid which has a syruplike consistency. Tri ethylene glycol teg, and mono ethylene glycol meg, units are used for gas dehydration by two types.
Ethylene glycol eg ethylene glycol c 2h 4oh 2 is produced from ethylene oxide through a catalytic reaction with water at higher temperature resulting in a yield of mono ethylene glycol meg, known as glycol, and the byproducts di ethylene glycol deg and tri ethylene glycol teg. Keywords mono ethylene glycol carbonylation hydrogenation pilot plant introduction mono ethylene glycol. Chemical product and company identification product name. Diethylene glycol deg and triethylene glycol teg are obtained as coproducts in the manufacture of meg from ethylene. Ethylene oxide reacts with water to produce ethylene glycol. An important feature of the process is the negligible production of diethylene glycol deg and triethylene glycol teg, which occur as byproducts in other ethylene glycol. A novel 2step process abstract ethylene glycol demand is growing rapidly, particularly in the global polyethylene terephthalate markets. An important feature of the process is the negligible production of diethylene glycol deg and triethylene glycol teg, which occur as byproducts in other ethylene glycol production processes. Ethylene glycol eg, the principal topic discussed in this article is also interchangeably referred to as monoethylene glycol meg. Typically a physical process plant comprises with gas dehydration system.
Mono ethylene glycol meg is an important raw material having numerous research and industrial applications. Ethylene glycol is commonly used as an antifreeze agent. This consultation paper is part of this formal process and covers all of the icis primary price points included in the ethylene glycol weekly publications. Ethylene glycol has become one of the worlds important industrial chemicals. Monoethylene glycol meg process johnson matthey now offer a new davy meg licensed process in partnership with eastman. Consideration should be given to having appropriate expansion space for the solution and to the need for an inhibited glycol. The simplicity and reliability of the process makes it popular. Recovery of monoethylene glycol distillation and the. Typically a physical process plant comprises with gas dehydration system which. Apr 27, 2014 the simplicity and reliability of the process makes it popular. An important feature of the process is the negligible production of diethylene glycol deg and triethylene glycol teg, which occur as.
The ethylene and oxygen are added to a cycle gas which uses nitrogen or methane as the ballast. Since eo is very reactive and hazardous to handle and ship. In 1995 the world capacity for ethylene glycol was about 9. The chemical formula for ethylene glycol is c 2 h 6 o 2, and its molecular weight is 62. Properties of ethylene glycol ethylene glycol is specifically colorless, syrupy hygroscopic liquid with a sweet taste. Mono ethylene glycol meg is used primarily at lowtemperature processing plant for extracting natural gas liquids. This ring is then hydrolyzed with a base catalyst in a second step to produce mono ethylene glycol. Ethylene oxide reacts with water to produce ethylene glycol according to the chemical equation. Mono ethylene glycol or meg is a vital ingredient for the production of polyester fibres and film, polyethylene terephthalate pet resins and engine coolants. Monoethylene glycol meg process summary ihs markit. Oct 01, 2015 in the described process, meg is produced via eo, which is manufactured in an integrated plant utilizing shell eo technology. Us33205673 197302 197302 process for preparing monoethylene glycol and ethylene.
The equipment elements in a simplified process flow diagram are discussed along with recommended. World scale ethylene glycol plant international process plants. Ethylene glycol eg production and manufacturing process. Ethylene glycol based water solutions are common in heattransfer applications where the temperature in the heat transfer fluid can be below 32 o f 0 o c. A higher selectivity is achieved by use of shells omega process. Measuring purity of meg monoethylene glycol measuring purity of meg monoethylene glycol. A pfd process flow diagram of the identical refrigeration. Monoethylene glycol is typically prepared from ethylene oxide, which is.
534 194 1502 754 1292 1256 491 12 338 553 1366 917 729 614 567 1488 1125 528 438 464 417 462 215 1317 1197 1293 936 931 1430 934 213 861 123